package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PutMapping;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /**
     *
     * 新增菜品和口味
     */
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO){
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //向菜品表插入数据
        dishMapper.insert(dish);
        //获取当前菜品id
        Long dishId=dish.getId();
        //向口味表插入n条数据
        List<DishFlavor> flavor=dishDTO.getFlavors();
        if(flavor!=null&&flavor.size()>0){
            //遍历dishflavor集合
            for (DishFlavor dishFlavor:flavor){
                dishFlavor.setDishId(dishId);
            }
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavor);
        }

    }

    /**
     *  菜品分页查询
     * @param dishPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     *  批量删除菜品
     * @param ids
     */
    @Override
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否能够以删除，是否存在起售中的菜品
        for (Long id:ids){
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus()== StatusConstant.ENABLE){
                //当前菜品处于起售中，不能删除
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断房前菜品是否能够删除---菜品是否呗套餐关联了
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIds!=null&&setmealIds.size()>0){
            //当前菜品被套餐关联，不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        //删除菜品表中的菜品数据
         for (Long id:ids){
//             dishMapper.deleteById(id);
//             //删除菜品关联的口味数据
//             dishFlavorMapper.deleteByDishId(id);
             //根据菜品id集合批量删除菜品数据
             dishMapper.deleteByIds(ids);
             //根据菜品id集合批量删除关联的口味数据
             dishFlavorMapper.deleteByDishIds(ids);
         }
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        //根据id查询菜品信息；
        Dish dish = dishMapper.getById(id);
        //根据菜品id来查询口味信息
         List<DishFlavor> flavors = dishFlavorMapper.getByDishId(id);
        //将查询到的数据封装带vo
         DishVO dishVO=new DishVO();
         BeanUtils.copyProperties(dish,dishVO);
         dishVO.setFlavors(flavors);
        return dishVO;
    }

    /**
     *根据id修改菜品基本信息和对应的口味信息
     * @param dishDTO
     */
    public void updateWithFlavor(DishDTO dishDTO) {
        //修改菜品的基本信息
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        //原来的口味全部删掉在重新插入数据
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        //重新插入数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null&&flavors.size()>0){
            for (DishFlavor flavor:flavors){
                flavor.setDishId(dishDTO.getId());
            }
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }
    /**
     * 菜品起售停售
     *
     * @param status
     * @param id
     */
    @Transactional
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);

        if (status == StatusConstant.DISABLE) {
            // 如果是停售操作，还需要将包含当前菜品的套餐也停售
            List<Long> dishIds = new ArrayList<>();
            dishIds.add(id);
            // select setmeal_id from setmeal_dish where dish_id in (?,?,?)
            List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(dishIds);
            if (setmealIds != null && setmealIds.size() > 0) {
                for (Long setmealId : setmealIds) {
                    Setmeal setmeal = Setmeal.builder()
                            .id(setmealId)
                            .status(StatusConstant.DISABLE)
                            .build();
                    setmealMapper.update(setmeal);
                }
            }
        }
    }



}
